Journal profile · Computer Science, Theory & Methods
ACM Transactions on Architecture and Code Optimization
ISSN 1544-3566 · eISSN 1544-3973 · Association for Computing Machinery (ACM) · UNITED STATES · Quarterly
ACM Transactions on Architecture and Code Optimization: CAS Zone 3 · Computer Science (2025 upgraded edition); impact factor 2.69; fully open access; median 218 days to acceptance (102 articles, last 24 months); community-reported acceptance: easy; 150 articles in 2025; indexed in SCIE and Scopus.
Scope
Aims, scope and focus
ACM Transactions on Architecture and Code Optimization is published by Association for Computing Machinery (ACM) and is in Zone 3 of Computer Science in the CAS Journal Ranking (2025 upgraded edition). By OpenAlex counts of its recent articles, its largest topics are Parallel Computing and Optimization Techniques, Advanced Data Storage Technologies and Interconnection Networks and Systems, together about 50% of its articles. Its main subfields are Computer Networks and Communications. (generated from OpenAlex topic counts and CAS ranking data)
ACM Transactions on Architecture and Code Optimization (TACO) is an Open Access journal that focuses on hardware, software, and system research spanning the fields of computer architecture and code optimization. Articles that appear in TACO will either present new techniques and concepts or report on experiences and experiments with actual systems.
From the journal's Aims & Scope
Research area (LetPub): Computer Science, Theory & Methods
Editor-in-chief Cristina SilvanoPublisher website
Editorial board by country: 1 in mainland China (about 6%); most named Singapore 2, Mainland China 1, United States 1, United Kingdom 1, Japan 1 (17 members with a country) Editorial board ↗Publisher website ·
Main research topics OpenAlex counts of recent articles; shares are approximate
- Parallel Computing and Optimization TechniquesComputer Science29.1%
- Advanced Data Storage TechnologiesComputer Science13.7%
- Interconnection Networks and SystemsComputer Science7.3%
- Cloud Computing and Resource ManagementComputer Science7.1%
- Embedded Systems Design TechniquesComputer Science5.8%
- Distributed systems and fault toleranceComputer Science4.4%
- Distributed and Parallel Computing SystemsComputer Science4%
- Advanced Neural Network ApplicationsComputer Science3.7%
Rankings & indexing
CAS ranking and database indexing
CAS Journal Ranking
CAS Journal Ranking, upgraded edition (March 2025)Computer Science Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Computer Science | Zone 3 |
| Minor | Computer Science, Hardware & Architecture | Zone 3 |
| Minor | Computer Science, Theory & Methods | Zone 3 |
Top journal: noReview journal: no
CAS Xinrui Journal Ranking (March 2026)Computer Science Zone 4
| Level | Category | Zone |
|---|---|---|
| Major | Computer Science | Zone 4 |
| Minor | Computer Science, Hardware & Architecture | Zone 4 |
| Minor | Computer Science, Theory & Methods | Zone 3 |
Top journal: noReview journal: not marked
CAS Journal Ranking, previous upgraded edition (December 2023)Computer Science Zone 3
| Level | Category | Zone |
|---|---|---|
| Major | Computer Science | Zone 3 |
| Minor | Computer Science, Hardware & Architecture | Zone 3 |
| Minor | Computer Science, Theory & Methods | Zone 3 |
Top journal: noReview journal: no
Database indexing
SCIEScopusLetPub
International journal early-warning lists: not listed in any editionLetPub
Indexing the journal's website claims
ACM Digital LibraryPublisher website
As the journal's website lists them, not checked against each database; for Web of Science editions the records above apply.
Editions, and major and minor categories, are shown separately and never merged into one zone; check which edition your institution uses before you submit or report.
Metrics
Impact metrics and publication volume
Impact
- Impact factor
- 2.69LetPub ·
- CiteScore 2026-06
- 3.6LetPub ·
- SJR 2026-06
- 0.6LetPub ·
- SNIP 2026-06
- 1.18LetPub ·
- h-index
- 32LetPub ·
- h-index
- 57OpenAlex ·
- i10-index
- 526OpenAlex ·
- 2-year mean citedness
- 1.99OpenAlex ·
- Self-citation rate
- 10.3%LetPub ·
- Share of gold OA articles
- 99.67%LetPub ·
Volume
- Articles per year
- 168LetPub ·
Articles by year OpenAlex count · 1,443 in total · the current year is incomplete
| Year | Articles | Open access | Citations |
|---|---|---|---|
| 2026 | 146 | 146 | 16 |
| 2025 | 150 | 150 | 243 |
| 2024 | 107 | 107 | 541 |
| 2023 | 57 | 57 | 489 |
| 2022 | 80 | 80 | 869 |
| 2021 | 57 | 57 | 698 |
Sources count differently and were observed at different times, so each source's own value is kept; "publisher" marks figures from the journal's website.
Review & acceptance
Review time and acceptance
Review time from article dates manuscript dates registered with Crossref · to
218 daysMedian, submission to acceptance · P25–P75 154 days – 265 days
- Acceptance to online
- median 70 days (102 articles)
- Submission to online
- median 295 days
- Sample
- 102 articles with submission and acceptance dates (352 in the window); the latest was accepted on
Only articles that were accepted and published are counted, not the time spent on rejected manuscripts, so this usually runs longer than a publisher's "time to first decision".
Other sources
- Average review time (community reports)
- 6–12 weeksLetPub ·
- Average acceptance (community reports)
- EasyLetPub ·
Community reports come from authors' own submissions (confidence 0.5) and are not a promise from the journal; for publisher figures, the journal's own definitions apply.
Fees & open access
APC and open-access policy
Fully open accessOpenAlex
Every article is open access; authors usually pay an article processing charge (APC).
No source has fee information yet; check the journal's website.
The journal's website is authoritative for fees; sources were observed at different times and each keeps its own value, without averaging.
Submission
Article types and submission policies (journal website)
Policy excerpts from the journal's websiteAuthorship, Peer review
- Authorship
New ACM Policy on Authorship covering key topics including the use of generative AI tools. Model summary
ACM has a new Policy on Authorship, covering a range of key topics, including the use of generative AI tools.
Source ↗Publisher website ·- Peer review
Updated ACM Peer Review Policy announced; FAQ covers confidentiality, use of large language models in peer review, conflicts of interest, and other concerns. Model summary
ACM is pleased to announce that its Publications Board has approved an updated Peer Review Policy.
Source ↗Publisher website ·
Excerpts are quoted from the journal's website; "model summary" lines are written by Workers AI and checked against the text. The journal's website is authoritative.
Profile
Publication details and official links
- Publisher
- Association for Computing Machinery (ACM)
- Country or region
- UNITED STATES
- Language
- English
- Frequency
- Quarterly
- ISSN
- 1544-3566
- Electronic ISSN
- 1544-3973
- Latest issue on the website
- Volume 23, Issue 4 (December 2026)
- Official links
- Journal homepage ↗OpenAlex
- Submission system ↗Publisher website
- Special issues ↗Publisher website
FAQ
Frequently asked questions about ACM Transactions on Architecture and Code Optimization
What CAS zone is ACM Transactions on Architecture and Code Optimization in?
In the 2025 upgraded edition of the CAS Journal Ranking, ACM Transactions on Architecture and Code Optimization is in Zone 3 of Computer Science, and in Zone 3 of the minor category Computer Science, Hardware & Architecture / Computer Science, Theory & Methods. In the 2026 Xinrui edition it is in Zone 4 of Computer Science. Zones from different editions, and from major and minor categories, are not interchangeable.
What is the impact factor of ACM Transactions on Architecture and Code Optimization?
The latest impact factor listed by LetPub is 2.69; CiteScore 3.6, h-index 57.
How long does peer review take at ACM Transactions on Architecture and Code Optimization?
Based on the dates recorded on 102 articles published between October 2024 and October 2026 (the last 24 months), the median time from submission to acceptance is 218 days (interquartile range 154–265 days); authors report an average review time of 6–12 weeks; the community-reported acceptance is “Easy”. Article statistics cover accepted papers only, publisher figures follow the journal's own definitions, and community reports come from authors' own submissions; none is a promise from the journal.
Where are the editorial board members of ACM Transactions on Architecture and Code Optimization based?
Of the 17 board members whose country the journal's board page names, 1 (about 6%) are in mainland China; the countries named most often are Singapore (2), Mainland China (1) and United States (1). Counted from the institutions listed on the board page; for reference only.
Which databases index ACM Transactions on Architecture and Code Optimization?
According to LetPub and DOAJ records, ACM Transactions on Architecture and Code Optimization is indexed in SCIE and Scopus.
Is ACM Transactions on Architecture and Code Optimization open access, and what is the APC?
ACM Transactions on Architecture and Code Optimization is a fully open-access journal. Fee information is not available yet; check the journal's website.
Sources and updates
The facts on this page come from LetPub, OpenAlex, Publisher website; every figure is tagged with its source and the date it was observed, and conflicting values are kept per source. LetPub source page: view ↗ (archived 2026-08-25). Last updated: .